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In nested translation, the stage-1 page table is user-managed but cached by the IOMMU hardware, so an update on present page table entries in the stage-1 page table should be followed with a cache invalidation. Add an IOMMU_HWPT_INVALIDATE ioctl to support such a cache invalidation. It takes hwpt_id to specify the iommu_domain, and a multi-entry array to support multiple invalidation data in one ioctl. enum iommu_hwpt_invalidate_data_type is defined to tag the data type of the entries in the multi-entry array. Link: https://lore.kernel.org/r/20240111041015.47920-3-yi.l.liu@intel.com Reviewed-by: Kevin Tian <kevin.tian@intel.com> Co-developed-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
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| .. | ||
| device.c | ||
| double_span.h | ||
| hw_pagetable.c | ||
| io_pagetable.c | ||
| io_pagetable.h | ||
| ioas.c | ||
| iommufd_private.h | ||
| iommufd_test.h | ||
| iova_bitmap.c | ||
| Kconfig | ||
| main.c | ||
| Makefile | ||
| pages.c | ||
| selftest.c | ||
| vfio_compat.c | ||